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Data Last Updated: March 1, 2023
ZIP Codes for City of Defiance, IA
Defiance, IA ZIP Code Boundaries
Defiance, IA Covers 1 ZIP Code
Defiance, IA Demographic Information *
* Demographic data is based on 2010 Census for the City of DEFIANCE.
** City and ZIP Code Population will not be equal due to differences in their geographies.